Dorico upgrade offer

An early adopter of Dorico, I have just got round to upgrading from Dorico 1 to Dorico 3

However Steinberg Download Assistant offers no help in terms of detailing the software installation process for this upgrade

Any advice much appreciated

Download and run the:
Dorico Pro 3.1 Application Installer
Dorico Pro 3 Sounds Installer

It’s a good idea to download and read the Version History too. Dorico 3.1 will not overwrite your Dorico 1 installation; it’s a separate application. The Sounds Installer for Dorico 3(.1) does contain some new stuff, but it’s clever enough to not install duplicates of the Dorico 1 Sounds, so it won’t eat up unnecessary space on your hard drive.